Does Warm Milk Help You Sleep

In many homes, the day ends the same way: a glass of warm milk, handed over by a mother or a grandmother, drunk slowly in a quiet kitchen, and then bed. It is one of the oldest bedtime habits in the world, and it has survived because it feels kind. But does it actually help you sleep, or is it just a comforting memory? The honest answer is somewhere in the middle. Warm milk is not a medicine, and it will not force a restless mind to sleep. But for many people it does help them settle, and there are real, simple reasons why: the warmth itself is relaxing, the drink is part of a calm routine, and milk contains small amounts of nutrients that are linked with the body’s normal sleep processes. This article explains each of those reasons in plain words, and it also explains when warm milk may not suit you, so you can judge the habit fairly for yourself.

It is worth saying at the start that people mean different things when they ask this question. Some people want to know whether milk contains something that makes you sleepy. Others want to know whether the habit is worth keeping, or worth starting. And some people, especially parents, want to know whether it is a good idea for their children. The answer is slightly different for each of those questions, and this article will take them one by one. What it will not do is promise you a perfect night. Sleep is shaped by the whole day — by light, movement, worry, screens and the time you go to bed — and one glass of milk cannot undo a very irregular day. What it can do is give the evening a gentle ending, and for many people that gentle ending is enough to make the night easier.

Where the Warm Milk Habit Comes From

Warm milk at bedtime is not a new idea from a health magazine. It is an old home habit, found in many countries and many cultures, and it has been passed down through families for generations. In some homes it is milk warmed on the stove, with a little sugar or honey. In others it is milk with a pinch of turmeric, or cardamom, or cinnamon. In some homes it is plain, with nothing added at all. The details change from family to family, but the pattern is the same: a warm drink, in the evening, in a quiet moment, before bed. That pattern matters, because habits that survive for generations usually survive for a reason, even if the reason is not the one people first think of.

Part of the reason is simply that milk was there. In farming homes, milk was a daily food, fresh and cheap, and it made sense to use it in the evening as a light supper or a bedtime drink. It was also a food that children could drink easily, that older people could manage without chewing, and that gave a feeling of fullness without a heavy meal. A glass of milk before bed meant that a child would not wake hungry in the night, and that an older person would not go to bed with an empty stomach. Those are practical reasons, not magical ones, and they are still true today. A small glass of milk is a simple way to take the edge off evening hunger, and a stomach that is quietly satisfied settles more easily than one that is empty or stuffed.

The other part of the reason is comfort. A warm drink, held in both hands, drunk slowly, is a signal to the body that the day is ending. It is hard to rush a glass of warm milk. You have to sit down, you have to wait for it to cool a little, and you have to drink it slowly, or it burns your tongue. That slowness is the point. In a busy day, the glass of milk may be the first quiet moment you have had since morning, and that quiet moment itself is relaxing. When people say warm milk helps them sleep, they are often describing that whole moment — the warmth, the quiet, the feeling of being looked after — and not just the milk itself. That does not make the effect any less real. It simply means the milk is part of a larger habit, and the habit is what does most of the work.

What Is Actually in a Glass of Milk

To judge warm milk fairly, it helps to know what is in it. A glass of milk is mostly water, with protein, a small amount of fat, natural milk sugar called lactose, and a useful mix of vitamins and minerals. The protein in milk is good quality, which means it gives your body the building blocks it needs in a form it can use easily. Milk is also a good source of calcium, which your body needs for bones and teeth, and for the normal working of muscles and nerves. It gives you vitamin B12, which helps make red blood cells, and smaller amounts of vitamin A, vitamin D in fortified milk, potassium and magnesium. None of these nutrients is a sleeping pill. They are ordinary nutrients that your body uses every day, and a glass of milk is simply a convenient way to get some of them in the evening.

Milk also contains a small amount of tryptophan, an amino acid that the body uses to make serotonin and then melatonin, two chemicals that are involved in mood and in the body’s daily sleep rhythm. This is the fact that most articles about warm milk point to, and it is true, but it needs to be kept in proportion. The amount of tryptophan in a glass of milk is small, and eating a food that contains tryptophan does not mean that all of it reaches the brain or turns into melatonin in a useful amount. Other foods, such as eggs, chicken, turkey, nuts and seeds, contain tryptophan too, often in larger amounts than milk. So if tryptophan alone were the answer, a chicken dinner would be a stronger sleep aid than a glass of milk, and nobody claims that. The tryptophan in milk is a small part of the story, not the whole story, and it is honest to say so.

What milk does offer, in a way that is easy to understand, is a combination: a little protein, a little calcium, a little magnesium, some warmth, and a feeling of fullness, all in one small drink. That combination is gentle, and it is easy for the stomach to handle. A glass of milk does not spike your blood sugar sharply, it does not sit heavily like a fried meal, and it does not contain caffeine, which is the main reason tea and coffee can disturb sleep. In that sense, milk is a good evening drink not because it has one magic ingredient, but because it has nothing in it that fights against sleep, and several small things that go along with it. That is a modest claim, but it is an honest one, and it is enough to explain why so many people find the habit helpful.

Why Warmth Itself Can Feel Soothing

One of the most overlooked parts of this habit is the word warm. A glass of cold milk is a different experience from a glass of warm milk, even though the nutrients are the same. Warmth relaxes the body in a way that cold does not. When you hold a warm cup, your hands warm up. When you drink something warm, your throat and stomach warm up. That feeling of warmth spreads slowly through the body, and it is closely linked with the feeling of safety and rest. Babies are calmed by warmth, children are calmed by a warm blanket, and adults are calmed by a warm bath or a warm drink. It is one of the simplest signals the body understands, and it has nothing to do with nutrition at all.

There is also a small but real change in body temperature after a warm drink. Your body temperature rises slightly when you drink something warm, and then it falls again as your body cools itself down. That fall in temperature is similar to the natural fall in body temperature that happens in the evening as your body prepares for sleep. In other words, a warm drink may help your body go through a small version of the cooling-down process that normally leads to sleepiness. This is not a strong effect, and it is not the same for everyone, but it is one more reason why a warm drink in the evening feels different from a cold one, and why people often describe warm milk as soothing rather than simply filling.

The temperature also forces you to slow down. You cannot gulp a glass of hot milk. You have to sip it, wait between sips, and sit still for a few minutes. Those few minutes are often the only still minutes in the whole evening, and stillness itself is relaxing. If you drink your milk while standing in a bright kitchen, scrolling through your phone, you will get far less benefit than if you drink it sitting down, in a dim room, with nothing to do for five minutes. The milk is the same. The moment is different. That is why the advice in this article is not simply to drink warm milk, but to drink it slowly, in a quiet place, as part of a calm end to the day. The warmth and the quiet work together, and neither one works as well without the other.

The Routine Around the Milk Matters More Than the Milk

If you take one idea away from this article, let it be this: the routine around the milk matters more than the milk itself. The human body loves routine. It learns from what repeats, and it begins to prepare for sleep when it recognises the signals that sleep is coming. If you drink warm milk at the same time every night, in the same place, after the same evening activities, your body begins to link that drink with bedtime, and it starts to slow down before you even finish the glass. That is not imagination. It is the same kind of learning that makes you feel hungry at your usual lunch time, or sleepy when you sit in your usual chair in the evening. The body keeps time by habits, and a regular bedtime drink is one of the clearest habits you can give it.

This is why warm milk often works best for people who have had it since childhood. A person who drank warm milk every night as a child has a lifetime of evenings linked with that taste and that warmth, and the link is strong. A person who starts drinking warm milk for the first time as an adult may feel no effect at all on the first night, and only a small effect after a week or two, because the link has not been built yet. That does not mean the habit is useless for adults. It means you should give it time, and you should keep the rest of the evening steady too. A glass of milk will not create a routine on its own. It needs to be part of a regular pattern: a similar dinner time, a similar wind-down, a similar bedtime, night after night.

It also matters what else happens in that wind-down hour. If you drink your milk and then pick up a bright phone, or start a loud argument, or eat a large snack, the calm of the milk is quickly lost. If you drink your milk, and then read a few pages of a book, or talk quietly with family, or simply sit for a while, the calm has a chance to last. In that sense, warm milk is best thought of as the centre of a small evening ritual, not as a standalone remedy. The ritual might be as simple as warming the milk, sitting down, drinking it slowly, brushing your teeth, and going to bed. Done every night, that short chain of actions tells your body, in a language it understands, that the day is over. The milk is the taste of that message, but the message is the routine itself.

Does Milk Contain Anything Linked to Sleep?

This is the question most people really want answered, so it deserves a careful, honest reply. Milk does contain small amounts of several nutrients that are linked with sleep in general information: tryptophan, calcium, magnesium and vitamin D. Each of these plays a part in the body’s normal processes, and a shortage of any of them can make you feel unwell in ways that affect sleep. But a shortage is not the same as a normal diet, and most people who eat a varied diet are not short of these nutrients. For them, an extra glass of milk does not add a missing ingredient. It simply adds a little more of nutrients they already have enough of, and that extra amount is unlikely to change their sleep on its own.

That is why studies of milk and sleep, where they exist, tend to show small and mixed results. Some people report sleeping better after warm milk, and some report no change at all. The people who report a benefit are often the people who also changed their routine at the same time: they went to bed earlier, they put their phone away, they ate a lighter dinner. It is very hard to separate the effect of the milk from the effect of those other changes, and honest health writing should say so. Warm milk is not a proven sleep treatment, and it would be wrong to present it as one. It is a traditional, gentle, low-risk habit for most people, and for many of them it feels helpful, and that feeling, combined with a calm routine, is a reasonable reason to keep it.

There is one more point worth making here, because it is often misunderstood. Some people add honey, sugar or chocolate to their warm milk, thinking it will make it work better. A small amount of honey or sugar may make the milk taste better, and a little carbohydrate with the tryptophan may, in theory, help the body use it, but the effect is tiny, and a large amount of sugar can have the opposite effect, giving you a burst of energy and leaving you thirsty later. A spoon of honey in a glass of milk is fine. Three spoons of sugar in a large mug, drunk late at night, is a sweet drink, not a sleep aid. The same goes for chocolate milk, which contains caffeine in small amounts, and for flavoured milk drinks that are mostly sugar. If you like your milk plain, plain is best. If you like a little flavour, keep it small and simple, and let the warmth and the routine do the work.

Warm Milk With Something Small: Biscuits, Honey, and Turmeric

Many people do not drink warm milk on its own. They drink it with a biscuit, or with a spoon of honey, or with a pinch of turmeric, and each of these additions has its own story. A small biscuit with milk is a very common bedtime snack, and it makes sense in a simple way: the biscuit gives a little carbohydrate, which helps you feel full, and the milk gives protein and warmth. Together they make a light snack that takes the edge off hunger without loading the stomach. The problem comes when the biscuit becomes three or four biscuits, or a packet of biscuits, because then the snack becomes a meal, and a sugary meal late at night is likely to disturb sleep rather than help it. One or two plain biscuits are a snack. A whole packet is a second dinner.

Honey is another common addition, and it is best kept small. A teaspoon of honey in warm milk adds sweetness and a little flavour, and many people find it comforting. It does not turn milk into a medicine, and it does not need to. Its value is in taste and in tradition, and a small amount is harmless for most people. Turmeric milk, sometimes called golden milk, is a traditional drink in South Asia, made by warming milk with turmeric and sometimes a pinch of black pepper or cardamom. Turmeric gives the milk a warm colour and a gentle flavour, and many families believe it helps with colds and with rest. There is no strong proof that turmeric milk helps you sleep, and it should not be presented as a cure for anything, but as a warm, traditional evening drink it is a reasonable choice for people who enjoy it, as long as the amount of turmeric is small and the milk is not loaded with sugar.

The principle behind all of these additions is the same: keep it small, keep it simple, and keep it early enough that your stomach has time to settle before bed. A glass of warm milk with a small biscuit, drunk an hour before bed, is a kind evening snack. A large mug of very sweet milk with a pile of biscuits, drunk five minutes before you lie down, is a heavy meal, and it will feel like one. The milk is not the problem in the second case. The amount and the timing are the problem. If you enjoy a flavoured milk, enjoy it, but let it stay a small pleasure, not a large one, and let it be part of a quiet evening rather than the last thing you rush through before sleep.

When Warm Milk May Not Suit You

Warm milk is a gentle habit for most people, but it does not suit everyone, and it is honest to say so. The most common problem is lactose, the natural sugar in milk. Some people find it hard to digest lactose, and for them a glass of milk can cause bloating, wind, stomach pain or loose motions. If that happens to you, warm milk before bed is not a good idea, and you should not force yourself to keep the habit because tradition says so. Lactose-free milk is an option for some people, and so are other warm drinks, such as herbal tea or warm water, which give you the warmth and the routine without the milk. The point of the habit is a calm evening, not the milk itself, and there are other ways to get that calm.

A second group who should be careful are people who suffer from heartburn or reflux, where stomach acid moves upward and causes a burning feeling in the chest. Lying down soon after drinking a large glass of milk can make that feeling worse for some people, because a full stomach puts pressure on the valve between the stomach and the food pipe. If you notice that milk before bed makes your chest burn, try drinking a smaller amount, drinking it earlier in the evening, or skipping it and choosing a different wind-down drink. A third point is about dairy allergy, which is different from lactose intolerance and can cause more serious reactions. Anyone with a known milk allergy should not drink milk at all, warm or cold, and should talk to a health professional about safe alternatives.

It is also worth thinking about calories. A glass of full-fat milk gives you energy, and if you are trying to manage your weight, a large glass of milk every night, especially with sugar or biscuits, adds up over weeks and months. That does not mean you should avoid milk. It means you should choose a portion that fits the rest of your day. A small glass of milk, or a glass of low-fat milk, gives you the warmth and the habit with fewer calories. And if you are someone who wakes in the night to use the bathroom, drinking a large glass of anything just before bed, including milk, can make that worse. A smaller glass, drunk an hour before bed, is usually a better choice. None of these points makes warm milk a bad habit. They simply mean that a good habit should be shaped to fit your own body, not followed blindly.

How to Try It for a Week and Judge Fairly

If you want to know whether warm milk helps you, the fairest way to find out is to try it properly for a week, and to watch what happens. That means drinking a small glass of warm milk at the same time each night, about an hour before bed, sitting down to drink it slowly, and keeping the rest of your evening as steady as you can. Go to bed at a similar time each night, keep your room dark and cool, and put your phone away for the last half hour. After a week, ask yourself a simple question: did you fall asleep more easily, and did you wake feeling more rested, than in the week before? If the answer is yes, keep the habit. If the answer is no, you have lost nothing, and you can try a different evening drink or a different wind-down routine instead.

It helps to keep a simple note for that week. You do not need a chart or an app. A few words each morning — what time you went to bed, how long it took to fall asleep, how you felt when you woke — is enough to show a pattern that memory alone will miss. Memory is unreliable, especially about sleep. We remember the bad nights and forget the good ones, and we often blame the wrong thing. A short note, written honestly each morning, gives you a fairer picture, and it stops you from deciding after one night that the milk worked or did not work. One night tells you almost nothing. A week tells you a little. Two weeks tell you more. That patience is the same patience that the habit itself teaches, and it is worth having.

And if warm milk does not help you, do not feel that you have failed, and do not go looking for a stronger drink or a pill to replace it. Sleep is not a problem that always has a food answer, and a habit that works for your grandmother may not work for you, because your days are different, your body is different, and your worries are different. The value of trying warm milk is not that it is guaranteed to work. It is that it is simple, cheap, gentle and easy to try, and it gives your evening a calm shape while you find out what does work for you. That calm shape, even without the milk, is worth keeping, and it may be the most useful thing the habit gives you in the end.

My Take:

If you ask me whether warm milk helps you sleep, my answer is yes, a little, and mostly not for the reason people think. I do not believe there is a magic ingredient in milk that switches off the brain and brings sleep. I believe the help comes from the warmth, the slowness, and the routine, and I think those three things are worth more than any single nutrient. A glass of warm milk forces you to sit down for five minutes, to hold something warm, to drink slowly, and to do nothing else for a short while. In a day full of noise and rushing, those five minutes are a small gift, and I think the body recognises them as a signal that the day is ending. That is why I would recommend the habit, not as a medicine, but as a kind way to end the day.

I think the reason this habit has lasted so long is that it is honest. It does not promise a miracle. It promises a warm drink, a quiet moment, and a feeling of being looked after, and it keeps that promise every night. Compare that with the products that promise perfect sleep in a bottle or a pill. They promise a lot, and they often disappoint, and disappointment makes people trust good advice less. Warm milk promises very little, and it delivers exactly what it promises, and that honesty is part of why families have kept it for generations. I would rather trust a small, honest habit than a large, loud promise, and I think most people feel the same way when they stop and think about it.

I also think we should be careful not to turn a gentle habit into a rule that makes people feel guilty. If you do not like milk, or if milk upsets your stomach, you should not drink it because someone told you it helps you sleep. There are other warm drinks, and there are other quiet routines, and the point is the quiet, not the milk. A cup of herbal tea, drunk slowly in a dim room, can give you the same pause. A few pages of a book, read without a screen, can give you the same slowing down. The milk is a good vehicle for calm, but it is not the only one, and I would not want anyone to feel they are doing sleep wrong because they do not drink milk. The habit should fit you, not the other way around.

There is something else I notice about warm milk, and it is about childhood. For many people, the taste of warm milk brings back the feeling of being a child, safe in bed, with someone nearby who cared for them. That feeling is powerful, and it is not something a laboratory can measure easily, but it is real all the same. When an adult drinks warm milk before bed, they are not just drinking milk. They are reminding themselves, in a quiet way, of a time when the night felt safe, and that reminder can help the body relax. I do not think we should dismiss that as unscientific. I think we should respect it, because the mind and the body are not separate, and a feeling of safety is one of the strongest aids to sleep that exists. A habit that carries that feeling with it is worth keeping, even if the nutrition alone cannot explain it.

I want to say something about parents here, because I think warm milk is one of the kindest things a parent can offer a child at bedtime. It is not expensive, it does not need a screen, and it does not need a special recipe. It is a glass of milk, warmed, handed over with a few quiet words, and then bed. That small act tells a child that the day is over, that they are safe, and that someone is looking after them, and those are the messages a child needs most at night. If a family can protect that moment, even on a busy evening, the child will carry the memory of it for years, and as an adult they may find themselves warming milk for their own children, not because a book told them to, but because it feels like home. That is how good habits travel, from one generation to the next, without any advertising at all.

My own view is that warm milk works best when it is part of a steady evening, not when it is used as a rescue. If you have spent the whole evening staring at a bright screen, drinking strong tea, and eating a heavy meal, a glass of milk at midnight will not undo all of that. It will be a warm drink at the end of a restless day, and the night will probably still be restless. But if your evening has already been fairly calm — a light dinner, a quiet hour, a dim room — then a glass of warm milk can be the final step that tips you into sleep. That is a modest claim, and I am comfortable making it, because it matches what I have seen and what most people describe. The milk does not do the work alone. It finishes work that the rest of the evening has already begun.

I would also tell a friend to keep the milk simple. Do not load it with sugar, do not turn it into a large sweet drink, and do not drink it five minutes before you lie down. Warm a small glass, add a little honey if you like, sit down, drink it slowly, and give yourself an hour before bed. Try it for a week, keep a short note each morning, and judge it fairly. If it helps, keep it. If it does not, let it go without guilt, and try a different quiet routine instead. Sleep is personal, and what helps one person may not help another, and there is no shame in that. The aim is not to follow a rule. It is to find the evening that lets your own body rest, and to protect that evening as much as you can.

One last thought, and it is about patience. The body does not learn a new habit in one night. It learns by repetition, night after night, and a habit that feels like nothing on the first night may feel like a real help by the end of the second week. That is why I would not judge warm milk after a single glass, and I would not give up on it after a single bad night. Give it a fair week, give your evenings a fair chance to become steadier, and then decide. In my view, that patience is the real lesson of warm milk. It is not a quick fix. It is a slow, gentle habit, and slow, gentle habits are the ones that last, because they do not ask you to be perfect. They ask you to be steady, and steady is something most of us can manage, one warm glass at a time.

I also think about the people who live alone, because their evenings are quieter in a different way. There is no one to warm the milk for them, no one to hand it over with a few kind words, and it is easy for the habit to slip away when there is no one to share it with. But I would say to a person living alone that warming your own milk can still be an act of care, not a chore. It is five minutes spent looking after yourself, in a day when nobody else will do it for you, and that matters more, not less, when you are on your own. Put the milk on the stove, wait for it to warm, pour it into your favourite cup, and sit down with it. That small ritual says, in a quiet way, that the day is over and you deserve rest, and I think the body hears that message even when the words are never spoken aloud.

There is a question I hear often, and it is whether warm milk is better than other warm drinks, and my honest answer is that it is not better in any large way. Herbal tea, warm water with a little lemon, or a small cup of warm milk made from oats or almonds can all give you the same warmth and the same pause, and for a person who cannot drink dairy milk, one of those is clearly the better choice. The milk is not special because it is milk. It is special because it is familiar, because it is part of a memory, and because it gives a feeling of fullness that water and tea do not. If your memory is tied to milk, keep the milk. If your body prefers tea, keep the tea. The habit that works is the one you will actually keep, and a habit you keep for years is worth far more than a habit you try for three nights and abandon because it does not suit you.

I want to say something about cost as well, because warm milk is one of the cheapest evening habits there is. A glass of milk costs very little, it needs no special equipment, and it takes only a few minutes on an ordinary stove. Compare that with the sleep products that are sold in shops and online, with their bright packaging and their promises of a perfect night. They cost far more, and they often deliver far less, because they are trying to sell you a solution to a problem that a quiet evening and a warm drink can often ease for almost nothing. I am not against spending money on health, but I think money should be spent where it truly helps, and a glass of warm milk is a reminder that some of the best help is also the cheapest. A family that cannot afford expensive products can still afford this habit, and that, to me, is a strong reason to value it.

The seasons change this habit too, and it is worth noticing how. In winter, a glass of warm milk feels like a gift, because the house is cold and the milk warms your hands as well as your stomach. In summer, the same glass may feel too warm, and a glass of milk at room temperature, or a smaller glass, may suit you better. There is no rule that says milk must be hot to help. Warm is enough, and in hot weather, even a cool glass, drunk slowly in a quiet room, can give you the same pause. The point is not the temperature on a thermometer. It is the feeling of slowing down, and that feeling can come from a warm drink in winter and a cool one in summer, as long as you sit down, drink slowly, and let the day end. A habit that bends with the seasons is a habit that lasts, because it does not fight the weather or your own body.

Finally, I would say this to anyone who is thinking of starting the habit: do not make it a test, and do not make it a duty. Make it a pleasure. Warm the milk the way you like it, add a little honey if you like it, sit in your favourite chair, and enjoy the few quiet minutes. If you turn it into a strict rule — I must drink milk, I must sleep, I must feel better — the pressure itself will keep you awake, and the habit will become a burden instead of a comfort. Sleep does not respond well to pressure. It responds to calm, to patience, and to a body that feels safe, and a warm glass of milk, drunk without hurry and without expectation, is one of the simplest ways to give your body that feeling. Keep it simple, keep it kind, and let the night come in its own time.

Frequently Asked Questions

Does “does warm milk help you sleep” change with age or daily routine?

Yes. Children often benefit most, because warm milk is part of a bedtime routine and stops them waking hungry. Adults may find it helps when their evenings are already calm, and older people often prefer a small glass earlier in the evening, so it does not leave them feeling full or waking to use the bathroom.

When is “does warm milk help you sleep” most noticeable?

It is most noticeable on calm evenings, when the milk is drunk slowly about an hour before bed as part of a quiet wind-down. On busy, bright, late evenings it is much less noticeable, because the rest of the evening is working against sleep.

What do people notice first when they ask “does warm milk help you sleep”?

People usually notice the warmth and the feeling of being full and settled first, then whether they fall asleep more easily. The taste and the routine are often what they remember, rather than any single change in how sleepy they feel.

How is “does warm milk help you sleep” different from one day to the next?

It differs because no two evenings are alike. A calm evening with a light dinner and no late screen makes the milk feel helpful, while a late, heavy, noisy evening can make the same glass of milk feel like it did nothing at all.

Can “does warm milk help you sleep” feel different for children and adults?

Yes. For children it is often about comfort, routine and not waking hungry, while for adults it is more about the warmth and the quiet pause it creates. What feels soothing to a child may feel like a small, pleasant habit to an adult, and both are valid.

What makes “does warm milk help you sleep” easier to understand in plain words?

It becomes easier when you think of it as a warm, quiet ending to the day rather than a sleep medicine. A small glass of warm milk, drunk slowly in a calm room an hour before bed, is the whole idea, and most people can picture that without any technical words.

Sources

• NHS — general health information: https://www.nhs.uk/
• World Health Organization — health topics: https://www.who.int/
• Centers for Disease Control and Prevention — health information: https://www.cdc.gov/
• Mayo Clinic — general health information: https://www.mayoclinic.org/
• Healthline — general health information: https://www.healthline.com/